#pragma once

#include <iostream>
#include "Protocol.hpp"

class Cal
{
public:
    Response Execute(Request &req)
    {
        Response resp(0, 0);
        switch (req.Oper())
        {
        case '+':
            resp.SetResult(req.X() + req.Y());
            break;
        case '-':
            resp.SetResult(req.X() - req.Y());
            break;
        case '*':
            resp.SetResult(req.X() * req.Y());
            break;
        case '/':
            if (req.Y() == 0)
                resp.SetCode(1); // 1->除零错误
            else
                resp.SetResult(req.X() / req.Y());
            break;
        case '%':
            if (req.Y() == 0)
                resp.SetCode(2); // 2->模零错误
            else
                resp.SetResult(req.X() % req.Y());
            break;
        default:
            resp.SetCode(3);    // 3->非法操作
        }

        return resp;
    }
};